<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <!-- 引入ElementUI样式 -->
  <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <!-- 引入ElementUI组件库 -->
  <script src="https://unpkg.com/element-ui/lib/index.js"></script>

</head>
<body>
<div id="app">
  <el-menu>
    <el-submenu index="1">
      <template slot="title">
        <i class="el-icon-location"></i>
        <span slot="title">导航一</span>
      </template>
      <el-menu-item>选项1</el-menu-item>
      <el-menu-item>选项2</el-menu-item>
      <el-menu-item>选项3</el-menu-item>
    </el-submenu>
    <el-submenu index="2">
      <template slot="title">
        <i class="el-icon-menu"></i>
        <span slot="title">导航二</span>
      </template>
      <el-menu-item>选项1</el-menu-item>
      <el-menu-item>选项2</el-menu-item>
      <el-menu-item>选项3</el-menu-item>
    </el-submenu>
  </el-menu>
</div>

<script>
  new Vue({
    el: '#app'
  });
</script>
</body>
</html>
